Pin-type feeding device



June 4, 1946. Q wlNTER 2,401,597

PIN-TYPE FEEDING DEVICE Filed Jan. 1, 1944 Patented June 4, 1946 2&01597 PIN-TYPE DEVICE Charles L. Winter, Chicago, 11]., assignmto United Aulgographic Register 00., a corporation of Illino Application January 1, 1944, Serial No. 516,634

2 Claims. (01. arr-as) This invention relates to pin wheel feeding devices for use in feeding stationery provided with regularly spaced feeding holes, and more particularly to an improved structure for carrying and controlling cscillatable pins on a feed wheel.

The primary object of the invention is to provide an improved feed wheel of simple construction wherein each'i'eed pin is mounted for oscillation in the direction of feed and cam means is provided to control the angular position of the pin while it is in feeding engagement with the paper and then release the pin so that it may withdraw from. the feed hole in the stationery without difficulty. Feed wheels of this type may be provided on an attachment for a typewriting machine or tabulating machine and be driven from the platen roll of a machine in the manner shown in my application Serial No. 513, 7 fil December 11, 1943.

The invention is illustrated in a preferred embodiment in the accompanying drawing, in which- Figure 1 is a fragmentary sectional view of a pin wheel embodying the invention: Figure 2, a

sectional view, taken as indicated at line 2-2 of Figure 1; Figure 3, an end elevational view of the feed wheel, taken in the opposite direction from Figure 1; Figure 4, a vertical sectional view, taken as indicated at line 6-4 of Figure 2; and Figure 5, aperspective view of one of the pin units.

In the embodiment illustrated, a feed wheel 8 is journalled on a driven shaft 1 and makes a driving connection-therewith by means of machine screws 8 which impale arcuate slots 9 in a hub member in which is splined to the shaft 1, as

indicated at II. This pin-and-slot connection permits the wheel to be adjusted rotationally with respect to the shaft 1.

The wheel is provided near its periphery with a concentric series of spaced sockets i2 which provide bearings for osclllatable feedunits i3. Each of the feed units has a cylindrical base to fit into the socket i2 and has an outwardly extending pointed feed pin it to engage perforations it in superposed strips of stationery 88, as shown in Figure 4. Each of the feed units is cut away at one end to provide a curved cam face I! which intersects the axis of oscillation of the feed unit. A cam member i8 is secured to a fixed bracket is by means of screws" which impale slots 2| in the bracket. The cam member I! is undercut to provide an inwardly presented cam cycleto hold them in ring 22 to engage the convex cam faces ll of the feed units. In the embodiment illustrated the cam member i8 and feed wheel t are held together by having the hub 33 oi the ieed wheel extend through the cam member l8 and a spring ring it is snapped into a groove provided on the hub.

As best shown in Figure 4, when the feed wheel is rotated clockwise, the feed pins are rocked into a forwardly inclined angular position on the wheel by the cam i8 acting on the cam faces ll of the units. The advancing pins then become fully engaged with the paper and draw it along for a portion of the cycle of the wheel and then the pins are released from the camand are free to rock limply so that they will drop out of the holes IS in the stationery without difllculty. The pins are thus left free until they again approach the position to be reengaged by the cam is and grip the next set of feed holes.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom for some modifications will be obvious to those skilled in the art.

I claim:

1. A pin-type feeding device for perforated strips comprising: a driven wheel, a plurality of spaced feed units Journalled concentrically for free oscillation in said wheel, each of said units having an outwardly extending pointed feed pin and an outwardly presented convex cam face which intersects the axis of oscillation of said unit, and a fixed cam member having an inwardly presented cam surface to engage the cam faces of the units only during the feeding portion of their proper angular feeding position.

2. A pin-type feeding device for perforated strips comprising: a driven wheel, a plurality of spaced feed units having cylindrical bases journalled in said wheel concentricaly for free oscillation forwardly and rearwardly'in the direction of rotation, each of said units having an outwardly extending pointed feed pin and a convex cam face by which the outward inclination of the pin can be controlled, and a fixed concave shaped cam to engage the cam faces of some of the feed units during a portion of their cycle to-control their inclination and leave the other units freeto oscillate loosely on the wheel.

CHARLES L. WINTER. 

